IWC Schaffhausen Receives Guinness World Record For The Latest Portugieser Eternal Calendar by Sameera Gamage 1 July, 2024 by Sameera Gamage 1 July, 2024 IWC’s Portugieser Eternal Calendar is the most precise lunar phase wristwatch in the world, and has now been awarded a Guinness World Record for this incredible feat! During Watches and …
